San Antonio de los Alemanes church was built in the Baroque style and was designed by Pedro Sánchez. The highly decorative High Altar and three side altars belong to the 18th century and were commissioned by the last Habsburg kings of Spain.
The church was built in the 1620s-1630s by King Felipe III along with a hostel and hospital for the Portuguese migrants who moved to Madrid when Portugal was under Spanish rule. For this reason it was originally called Hospital de los Portugueses. When Portugal gained independence, Phillip IV's Queen, Mariana de Austria, dedicated the refuge to German immigrants, and changed names.
King Phillip V gave the administration of the church over to the Hermandad del Refugio (Fraternity of Sanctuary), and this group continues to manage it today, offering food and shelter to the homeless of Madrid.
The church houses frescos by Luca Giordano and Francisco Ricci. The prolific Neopolitan painter Giordano was court painter (1692-1702) to Charles II of Spain, and active for the Royal Palace and the Buen Retiro Palace.
References:The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.